Ona Lighthouse (Norwegian: Ona fyr) is located on the small island of Ona in Sandøy Municipality in Møre og Romsdal county, Norway. The lighthouse is built on Onakalven, the highest cliff on the island overlooking the harbor and the few, clustered wooden houses on this small island. The original rotating Fresnel lens remains in use.The lighthouse was built in 1867 and was fully automated in 1971.